There are a few ways to look at this, while your statement is true it in no way refutes my position that it is a proper role of government unless one also believed the Rual Electrification was also proper use of government

the after effects of these government monopolies have been felt by scandal after scandal

Further before these enforced government monopoly on power farms were using a distributed network of Wind Generators, which Ironically are now being put back into place on some of these very same farms but instead of being able to give the farms good power they are being put in place by these came corrupt government run power companies

Had the government not interfered in the market place who knows what out have happened, may renewable energy and distributed power networks would have emerged decades sooner instead of just not emerging as a replacement for Coal power